Hectographic duplicator for the printing of entire pages, paragraphs and/or lines from mirror script originals



March 8, 1960 A. RENAUER 2,927,530

HECTOGRAPHIC DUPLICATOR FOR THE PRINTING 0F ENTIRE PAGES, PARAGRAPHS AND/OR LINES FROM MIRROR SCRIPT ORIGINALS Filed Oct. 22, 1956 5 Sheets-Sheet 1 INVEN TOR.

ANTON REN\AUER BY ATT'YS March 8, 1960 NAUER A. RE HECTOGRAPHIC DUPLICATOR FOR THE PRINTING OF ENTIR PAGES, PARAGRAPHS AND/OR LINES FROM MIRROR SCRIPT ORIGINALS Filed Oct. 22, 1956 5 Sheets-Sheet 2 INVENTOR. ANTON RENAUER BY Wpwwi ATT YS arch8, 1960 HECTOGRAPHIC DUPLICAT PAGES PA MIR A RE AUER OR OR ,THE PRINTING OF ENTIRE RAGRAPHS AND/OR LINES FROM ROR SCRIPT ORIGINALS v,

5 Sheets-Sheet 3 Filed 001;. 22, 1956 ANTON RENAUE R BY W M v 51 ATT'YS March 8, 1960 A. RENAUER 2,927,530

HECTOGRAPHIC DUPLICATOR FOR THE PRINTING 0F ENTIRE PAGES, PARAGRAPHS AND/OR LINES FROM MIRROR SCRIPT ORIGINALS Filed Oct. 22, 1956 5 Sheets-Sheet 4 L0 m I K) r 2 I L N I I0 5 z 1 co 2 E L/xm J INVENTOR.

ANTON RENAUER BY W, l

ATT'YS A. RENAUER March 8, 1960 2,927,530 HECTOGRAPHIC DUPLICATOR FOR THE PRINTING OF ENTIRE I PAGES, PARAGRAPHS AND/0R LINES FROM MIRROR SCRIPT ORIGINALS 5 Sheets-Sheet 5 Filed Oct. 22, 1956 m m w.

ANTON RENAUER A TT'XS United S tes HECTOGRAPHIC DUPLICATOR FOR THE PRINT- ING F ENTIRE PAGES, PARAGRAPHS AND/OK LINES FROM OR SCRHT ORIGINALS This invention relates generally to hectographic duplicator devices for printing of entire pages, paragraphs and/or lines from mirror script originals or masters in which the device has a fiat printing bed for the originals or masters to be supported in printing position, and a reciprocable carriage with guide devices at both side Which supports an impression element, such as a roller, the paper feeding slot, the taking 0E and moistening devices.

Duplicating apparatus of the type herein concerned is advantageously employed in copying work, such as for example, inserting desired information in particular blank spaces provided on forms. Such forms are widely used in accounting practices, in keeping records of work in factories and in the ordering and shipping of merchandise, among others. In the filling out of such forms there may be required to be printed a body of constant text, such as address information or merchandise identification information and a body of varying text which always follows the body of constant text. Problems arise in connection with 'the printing of such bodies of text repetitively where the forms employed are of different sizes or where portions of'the varying text material are to be omitted or where diverse texts must be reproduced in predetermined areas of'the forms, all of which'r quires proper adjustment in positions of the bodies of text material one relative the other or the covering of portions of the body of varying text. Further, since the printing process'to be done by the device usually com mences from a fixed location on the printing bed, it will be appreciated that such variations in printing of such bodies of text material raise complicated problems, which are further compounded by reason of theneed for speed and accuracy in the printing operation, especially where a great number of forms are required to be completed.

Methods are known to arrange the varying text and the constant text on separate mirror script originals which can be moved relatively to each other. Hereby the original bearing the constant text is in the form of a blind and at one edge will be clamped in position under a catch bar. Such an arrangement, however, has the disadvantage that the constant text will be in a fixed distance from the catch bar, i.e. from the point where'the printing starts, so that when forms of different sizes are to be used, for every size another original with the constant text is to be prepared and used. Neither is it possible to print several lines instead of one line of the varying text with one and the same original in this form.

Furthermore methods are known to cover parts of a sheet original with a strip original bearing the varying text, whereby these parts are bonded together by dry glueing and thus kept in position. Here a constant and steady displacing of the separate parts is not possible.

The invention is solving this problem by jointly arranging on thefiat 'print'ing bedof the hectographic duplicator a displaceable sheet original with the varying text, a displaceable rear and front blind and on top of it an adjustable heading part in the form of a strip with the constant text. The printing bed comprises guiding means for the front as well as for the rear blind. Means of conveyance make it possible to push the'blinds over a smaller or wider area of the original with the varying text. Furthermore means are provided for adjustment of the heading strip. The blinds consist of synthetic resin, metal, paper or the like in theform of sheets and the unused portions thereof are located in side of the casing of the hectographic duplicator.

The invention will be set forth by way of example and with reference to the accompanying drawings, in which:

Fig. 1 is a longitudinal section of a known hectographic duplicator;

Fig. 2 is a diagrammatic view from above of Fig. 1, with the carriage part missing;

Fig. 3 is a longitudinal section of the hectographic duplicator of the invention;

Fig. 4 is a diagrammatic view from above of the em bodiment of Fig. 3 with the carriage part missing;

Fig. 5 is a longitudinal section of the front portion of the hectographic duplicator of Fig. 4 at a larger scale;

Fig. 6 is a longitudinal section of the rear portion of the hectographic duplicator of Fig. 4 at a larger scale;

Fig. 7 is a section on the line Vl'l-VH of Fig. 5;

Fig. 8 is a section on the line VIII-VH1 of Fig. 6;

Fig. 9 is a part view in perspective of the printing bed of the hectographic duplicator of the invention and Fig. 10 is a side view of the fitting for the heading strip.

Fig. 11 is a fragmentary perspective view of a modified form of the invention in which novel adjustable clamping means for the heading part 28 is contemplated.

Fig. 12 is a fragmentary plan view of a modified form ofsaid duplicating device in which rollers 17 and 34 are detachably coupled together for both simultaneous and individual movement.

The hectographic duplicator of known construction, as shown in Figures 1 and 2, comprises a casing 1 with a horizontal flat printing bed 2. Above this printing bed 2 a carriage is mounted-merely indicated in the drawing by reference character C-whi ch is operated by hand and carries the impression roller 3, the paper feeding slot 4, the take-off plate 5 and the moisteningdevice, the last one not being shown in the drawing.

Inside of the casing 1 a transport roller 6 and a counter pressure roller 7 are mounted. The mirror script original 8 with the varying text, which is positioned on the flat printing bed 2, is guidedbetween the transport roller 6 and the counter pressure roller '7 through a slit 9 which extends over the entire width of the printing bed. The original 8 thus can be displaced on the printing bed by rotation of the rollers 6 and 7.

On top of the original 8 another original it is placed, which bears the constant text on the advanced portion 11, followed by an angular cut-out 12, through which the varying text of the mirror script original below it appears.- .At one side the original 10 is kept in place by a laminated spring 13 which is fitted below a pronged catch bar 14. When the pressure roller is brought down onto the printing bed 2, the laminated spring 13 is further tending to introduce the sheets for printing, for instance forms, which are fed through the slot 4, into the slit between impression roller 3 and take-oft plate 5. When the carriage is thereupon pushed in horizontal direction the printed sheet rises during the printing process, guided by the take-off plate.

As shown in Fig. 2, first the varying text of the original 8 which appears in the cut-out 1-2 is transferred to the sheet when being rolled over the mirror script originals 8 and 1d on the printing bed and only there- Faterited Mar. 8,19%)

after the constant text from the head portion 11 of the mirror script original 10 will be transferred. in addition to the permanent heading text any other text may be printed by shifting the mirror script original 8 in one or the other direction. 7

Inasmuch as the sheets that are to be printed are inostly forms or the like, one has to make surethat the permanent text is placed exactly in that area of the form provided for the heading. Therefore, the length of the forms has to be the same as the length of the mirror script original 10, because only thus the heading 11 of the original will be positioned properly for the final form. It will be appreciated that in this type of duplicating device, the printing process always is commenced from a fixed location on the bed, which is usually adjacent slit 9.

If such a hectographic duplicator is used for the filling in of forms for the execution of orders or for the bookkeeping and especially for the preparation'and distribution of Work in factories, for forms of different sizes always new originals 10 of corresponding size have to be-used. The frequent exchange of the originals 10 and the preparation of such of different size is quite a nuisance.

The hectographic duplicator of the present invention, by which these disadvantages are overcome, is very much like the hectographic duplicator of known construction. Therefore, similar parts are indicated by the same ref erence figure in the drawings. 7

As shown in Fig. 3, the mirror script original 8 with the varying text is again positioned on the printing bed 2 and fed to the rollers 6 and 7 through a slit 9. The portion of original 8 in closest proximity to slit 9 will be considered the advanced portion of said original.

Movably or adjustably supported overlying said advanced portion of original 3 is a blind 15 in the form of a sheet member. Blind 15 is adapted to be fed through transverse slit 9 in bed 2 from the interior of the casing 1 or below the plane of bed 2 by means of the transport roller 17. A guide plate 16 in the form of a shelf member is supported slightly spaced below the bed 2 and arranged between roller 17 and slit 9. The plate 16 is a continuous member curved in its longitudinal dimension to provide an intermediate portion thereof which extends into the slit 9 as a partition therein and has an extension 16' which depends from said partition portion into the casing 1. Supported from the bed 2 is a second plate 16" which cooperates with extension 16 to form a throat or guide means for original 8 which is passed between rollers 6 and 7 positioned below the extensions 16' and 16" (Fig. The original 8 also is fed through slit 9 on the side of the partition portion of plate 16 opposite to that from which the blind is is fed through the slit.

The blind 15, preferably a synthetic resin, metal or the like foil, is equipped with a row of holes (not shown in the drawing) along its longitudinal edges. These rows of holes are engaging pins 18, regularly spaced circumferentially at both sides of the transport roller 17 (Figs. 5 and 7). The cover 19 of the casing 1 which can be opened comprises springs 20 or the like by which the blind 15 is pressed against the transport roller 17 (Figs. 5 and 7). For counter pressure instead of springs a counter pressure roller might be used.

A flat angle bar 21 is affixed to both sides of the printing bed 2, covering a small portion of the blind 15. The blind 15 is thus guided into a slit 22, formed by the printing bed 2 and the angle bar. The angle bar 21 runs from the slit 9 in the printing bed to the rear end of the printing bed. Above the slilt 9 the'angle bar 21 is of such a shape that the slit 22 is forming an upward arch and then continues in horizontal direction. Hereby it is achieved that the blind 15, when escaping from the slit 9 of the printing bed 2, is guided into the. horizontal portion of the slit 22 without getting distorted.

As shown in Fig. 7, the transport roller 17 comprises a shaft 23, extending sideward from the casing 1, with a handwheel 24 attached to it for rotation of the roller 17. Preferably the transport roller 17 comprises a catch devise to ensure a step by step. rotation of the roller 17. For this purpose grooves 25 are provided in the frontal faces of the roller 17, equally spaced from the longitudinal axis, which link with a ball 27 which in turn is under pressure of a spring 26.

For inserting and taking out respectively of the blind 15, the cover 19 of the casing 1 is opened and the blind placed on the transport roller so that the pins 18'of the transport roller are engaging in the rows of holes at the edges of the blind. By rotation of the transport roller 17 the blind 15 is moved via the guide plate 16 out of the slit 9 into the horizontal slit 22 and positioned on top of the original 8 which bears the varying text (sec Fig. 5). The blind 15is of such a length that it can be selectively positioned over sucha portion ofthe original 8 to cover any text that is not supposed'tobe printed. V I 3 The original 28 in the formor a strip .bears the constant text and will still. be referred .to as heading part. Inasmuch as the heading part must be displaceable according to the size of the form, as already stated before, it is'at one side held in place by a bowshaped springloaded clamp 29 (Fig. 9) which is pinned on the angle bar 21. For this purpose the'springloaded clamp has pins 30 depending from the bottom face. thereof (Fig. 10) which can be inserted in holes 31 in the angle bar. The holes are spacedfr'om'each other and from the catch bar 14 in such a distance that the heading part can be brought in the proper position for forms of any size. Thus, heading part 28 is supported on the upper surfaces of angle bars 21 spaced above the original 8 a slight distance.

Instead of the step by step adjustment of course also provision may be made of a continuous adjustment. For this purpose endless bands could be mounted at both sides, running in longitudinal direction, to which. the heading part is to be attached. The endless bands can be moved by a handwheel, whereby the position of the heading part can be changed continuously. Such an arrangement is illustrated in Fig. ll. There is provided an endless belt which is looped between the spaced apart rollers 51 and 52 rotatably mounted on suitable shafts 53 and 54 respectively which are journalled for rotation in a side wall of casing 1 in a well-known manner. One of the said shafts, such as shaft 53, is provided with an outwardly protruding portion on which is mounted the knob 55 for manually rotating said shaft. Belt 50 preferably is in the form of a flexible metal strip which is provided with a plurality of openings 56 intermittently spaced along theupper reach 57 of said belt. The reach 57 is positioned on top of a rail 21, being passed through suitable openings 58 in rail 21 for this purpose. The clip '29 may then be installed on reach 57 by inserting lugs or pins 30 into openings 56 properly aligned therewith. One or more of such flexible drive arrangements may be provided, ,the heading part 38 being supported by clips 29 and capable of being displaced relative original 8 merely by rotating of knob 55.

It now, for instance, a permanent text and a varying text are to be printed close to each other on a DIN A 4 form (this being a standard size of paper in Germany of approximately 29.7 by 21 centimeters in dimensions), the heading part 28 is to be afiixed .by means of the pins 30 in the proper distance from the catch bar 1 The blind 15 is moved that-close. to the heading part 28 that only the selected section, i.e. one or several lines of the original 8 below it remains uncovered. By shifting the original 8 the selected portion from the varying text of the original 8 can then be printed together'with the permanent text from the heading 28.

If new a Dinah 5. form. (a different standard size aemso of paperin Germany) is to be filled in the same way, the heading part 28 is to be placed in the proper distance ffoin the catch bar 14 by pinning the spring loaded clamp 29 in those holes 31 which are provided closer to the catch bar for this purpose. The original 8 is to be moved until the selected portion of the varying text appears in front of the heading part, whereupon the blind 15 again 'is moved sufliciently close to the heading part 23 that merely the selected portion of the'v'arying text remains uncovered. I

For the further purpose of being able to print the varying text at a smaller or wider distance from the permanenttext and'even, under omission of the heading part, to print one or several lines more or less close to the be ginning of the form, a rear blind '32 may be provided.

The rear blind '32 is placed on top of the original 8 but below the heading part 28 (Figs. 3 and 4). If the rear blind has its edge 32 prortuding from under the edge 28 of the heading part, as shown in Figs. 3, 4 and 9, the

varying text will be printed at a certain distance from the permanent text depending upon the extent said edge 32 protrudes. The farther the rear blind 32 is pushed out from under the heading part 28, the greater is the distance between the varying text of original *8 'andfthe constant text of heading part 28 in the final printed form.

If the edges 28' and 32 of the heading part 28 and rear blind32 respectively are in registry or flush one with the other or edge32' is retracted under headingpart 28, the varying text of original 8 and constant text of part 28 will be adjoining each other. Thus, rear blind 32 permits variation in spacing between the bodies of varying and constant text, said rear blind 32 being located over the original '8 carrying the varying text and below the.

heading part 28 carrying the constant text ,and movable independently relative said original 8, heading'pa'rt 28 V and front blind 15. As for blinds and 32, these may be considered horizontally displaceable one relative the other for varying thespacing therebetwe'en to controlthe area of original'8 which is exposed therebe'tween.

The rear blind 32 which, the same as the front blind, consistsof a foil of synthetic resin, metal or the like, is guided in the same slit 22 on the printing bed 2 as the front blind 15,'because the angle bar 21 which forms the slit extends to the end of the printing bed 2. At the rear end of the casing land between sideparts 33 which are attached to'the casing 1, a transport roller 34 is rotatably mounted, being of the same construction as the transport roller 17. The transport "roller 34 likewise comprises atboth sides circumferentially spaced pins 35, for engagement with the rows of holes at both 'sides'of the rear blind 32. The blind 32, appearing in horizontal direction from under the angle bars 21 at the rear end of the'casing '1, 'i'sled aroundthe transport roller34 and extends through a slit 36 in the rear Wall of the casing 1, into 'theinterior of the'casing 1. The cover shield 37, which can be fiapped down for'inserting and/or taking out the blind 32, comprises resilient means, i.e. bowshaped laminated springs 38 by which the blind '32 is pressed against the transport roller 34. "It'will be noted that shield 37 is curved at 37' to follow around roller 34 and thereby function to guide the blind 32 in its movement toward and-away from bed 2 relative the casing of the device.

Thetrans'por't roller 34 likewise comprises a sidewards protruding shaft '39 with 'a handwhe'el ifl atta'ched'to it, wherebythe transport roller can be set in rotation and the blind 32 be displaced. The rear transport roller 34 also includes spring-biased detent means such as described in connection with the transport roller 17 for controlled intermittent rotation thereof.

With the 'hectographicduplicator-of -the present invention youcan print entire pages. Furthermore, by selective positioning of the front and rear blinds, a varying text from the original 3 can be inserted in any convnient'distancefrdm"tlie head of'theform; thisma-y be either one or several lines, corresponding to the distance between the two blinds. In addition a varying text 'of either one or several lines can be printed directly adjoining the permanent text of the heading part or in any desired distance therefrom.

The varying text as Well as the permanent text can for this purpose be positioned so that the desired text will appear in the proper places in the printed forms, even if these are of different sizes.

Since for the printing of a sheet of difl erent size the front as Well as the rear blinds'are required to be shifted into another position, it is of advantage that themeans for displacement of the blinds be coupled, so that the blind 15 is displaced jointly with the blind 32. Such an arrangement is shown in Fig. 12 in which transport rollers 17 and 34 for the blinds 15 and 32 respectively are coupled on the interior of casing 1 by a flexible drive member, such as shown in outline form at 60. In this modification, the shaft mounting roller 34 is extended outwardly of shield 37'Where it mounts a knob 40. A clutch assembly designated generally 61 for detac'hahly coupling knob 40 with end faces of roller 34- is illustrated, the particular form of clutch assembly being immaterial and well-known in the coupling art. When pin 62 is engaged in socket 63 provided in an adjacent end face of roller 34, the clutch is operatively coupled whereby rollersand 17 may be rotated simultaneously. 0f course, de-clutching of assembly 61 will permit independent rotation of the transport rollers. Thus, it is possible to maintain a fixed spacing between blinds 15 and'32 over a displaced area of original 8 or it is possible'to vary the distance between said blinds and hence, the area of original 8 covered thereby. I

However, preferably the coupling of the means fordisplacement, i.e. the rollers 17 and 34, must be detachable, because otherwise the aperture through which the varying text appears for printing cannot be changed.

What I claim is:

1. A hectographic duplicating device comprising, a planar printing bed for supporting an assemblage of sheet members in position for printing therefrom commencing at a predetermined location on the bed, a carriage mounted for reciprocable movement over the print ing bed including an impression element adapted to be pressed against the assemblage during a printing pass of the carriage, moistening means mounted on the carriage for effecting imprint transfer "during such pass, and an assemblage of sheet member s supported in printingposition on the bed comprising, a first master carrying a body of varying text material, a second master carrying a body of constant text material, and at leastone blind member, support means on the bed for supporting the second master spaced above the first master, means for moving the first master relative to the second "master, means for moving the second master relative to the first master, said blind member arranged overlying the first master and onset from the plane of the second master, and means for independently moving said-blind'member relative to the first master for selectively covering portions of said body of varying text material.

2. A hectographic duplicating device comprising, a printing bed for supporting an assemblage of sheet members in position for printing therefrom, a carriage mounted for reciprocable movement over the printing bed ineluding an impression element adapted to be pressed against the assemblage during a printing pass of the carriage, moistening means mounted'on the carriage for effecting imprint transfer during such pass, and an assemblage of sheet members supported in printing position "on the bed comprising, a first master carrying a body of varying text material, a second master carrying a body of constant text material, andatleastoneblind member, "support means on the bed for supporting {the second master spaced above the firstrnaster, ine'ans for moving the first master relative to the s'econdmaster,

means for moving the second master relative to the first master, said blind member arranged overlying the first master and ofiset from the plane of the second master, means for independently moving said blind member relative to the first master for selectively covering portions of said body of varying text material, a second blind arranged underlying the second master and above the first master, said blinds being laterally spaced apart, and means for moving said second blind relative the second master for varying the spacing between said blinds and selectively covering portions of said body or varying text material.

3. A device as described in claim 2 in which said support means include guide means for simultaneously guiding such relative movement of the blinds.

4. YA device as described in claim 2 in which said blind members each comprise elongate sheets and the several means for moving the blinds are engaged with said sheets at diametrically opposite ends of the device.

5. A device as described in claim 2 in which there are clamp means adjustably mounted on said support means and said second master is releasably engaged by said clamp means for supporting same spaced above the first master.

6. A device as described in claim 2 in which the blinds are formed of a relatively opaque material characterized g by a foil-like thinness.

7. A device as described in claim 2 in which there are clamp means adjustably mounted on said support means and said second master is releasably engaged by said clamp means for supporting same spaced above the first master and said support means and clamp means are cooperably engaged together by a pin and hole connection. s

'8. A device as described in claim 2 in which said blinds each comprise elongate sheets having a series of intermittently spaced apertures adjacent a longitudinal edge thereof, and the several means for moving the blinds each comprises a rotatable member having means engageable in said apertures to move the associated blind when said member is rotated.

9 A device as described in claim 2 inwhich said blinds each comprise elongate sheets having a series of intermittently spaced apertures adjacent a longitudinal edge thereof, and the several means for moving the blinds each'comprises a rotatable member having means engageable in said apertures to move the associated blind when said member is rotated and said rotatable members each are selectively rotatable from exterior of the device.

10. A device as described in claim 2 in which said blinds each comprise elongate sheets having a series of intermittently spaced apertures adjacent a longitudinal edge thereof, and the several means for moving the blinds each comprises a rotatable member having means engageable in said apertures to move the associated blind when said member is rotated, said rotatable members each comprise a transport roller and a shaft mounting said roller journalled in a wall of said device, said shaft protruding outwardly of the device with said protuberant portion mounting a knob for rotating the shaft, and each shaft is mounted for step-wise rotation of its associated roller.

11. A device as described in claim 2 in which said support means comprise a pair of elongate rails upstanding on the bed respectively along a longitudinal edge of the bed, said rails each being undercut to pro vide cooperating guideways for movement of said blinds.

12. A device as described in claim 2 in which said bed has a transverse slit'therein located at the vicinity of the starting point for the printing process when the carriage is moved to make said pass.

13. A device as described in claim 12 in which said support means comprises a pair of elongate upstanding rails laterally spaced apart on the bed, each rail has a transverse groove substantially coextensive with the length of the rail for guiding the movement of said blinds, and said rails have portions thereof adjacent said slit and arched upwardly relative the bed, said first master and first blind being movable throughsaid slit in a movement following said arched portions.

14. A device as described in claim 12 in which there is a guide means supported below the bed having a partition portion extending into the slit and extensions on opposite sides of said partition portion, one of said extensions extending laterally away from the slit toward the means for moving said first blind to define a guide passageway for feeding the first blind through the slit.

15. A device as described in claim 12 in which there is a guide means supported below the bed having a partition portion extending into the slit and extensions on opposite sides of said partition portion, one of said extensions extending laterally away from the slit toward the means for moving said first blind to define a guide passageway for feeding the first blind through the slit, the

second extension depending downwardly from the bed, and there is a plate member depending substantially coextensively with and spaced from the second extension to define a guide passageway for the first master, the means for moving said first master being located to move the first master through said guide passageway therefor and likewise through the slit, said first blind and first master being movable through the slit on opposite sides of said partition portion.

16. A device as described in claim 2 in which said device includes a hollow'casing having an upper surface forming said bed, said means for moving the blinds each comprising a transport roller journalled for rotation on the interior of the casing, and said casing has removable cover means for gaining access to the rollers.

17. A device as described in claim 2 in which the device includes a hollow casing having an upper surface forming said bed, said means for moving the blinds each comprise a transport roller journalled for rotation on the interior of the casing, said rollers being coupled together for simultaneous movement of the blinds, said coupling being selectively severableto permit independent rotation of said rollers. V i

18. A device as described in claim 2 in which the means for moving the second master comprises an endless fiexible drive member having areach movable above said support means, said second master being detachably secured to saidreach for movement therewith.

19. A device as described in claim 2 in which said bed has a transverse slit therein adjacent the starting point for the printing process effected by the device, said first master and first blind being engaged through the slit with 4 portions thereof on opposite sides of the bed, the means for moving the first master and the means for moving the first'blind being installed below the plane of the bed, said first blind being displaced from the first master in movement through the slit whereby the first blind is disposed above the first master.

20. A device as described in claim 2 in which said first master and blinds each comprise elongate sheets, the respective means for moving said first master and first blind comprising a transport roller johrnalled for rotation on the device, and the bed has a transverse slit adjacent one end thereof, said first master and first blind both extended through the slit, and the means for moving said second blind comprising a transport roller journalled for rotation at the end of the bed opposite the first mentioned end thereof.

References Cited in the file of this patent UNITED STATES PATENTS 2,125,728 Kirkpatrick Aug. 2, 1938 2,707,433 Roberts May 3, 1955 FOREIGN PATENTS 182,720 Austria Ian. 15, 1955 a l-m W MM 

